The show can be funny at times and compares well with other shows on nickelodeon. If you are a fan of the chipmunks you'll like it. If not, there are some things to enjoy. I am personally in the later group. I find the chipmunk songs awful, and they happen EVERY episode. However this is my own opinion, and the chipmunks franchise is centered on their songs so I suppose that the show does it's job well.
One thing I really hated was the animation, it's abysmal and a HUGE downgrade from the movies (and the animation wasn't the best in them either). Voice acting can fall flat too. I would have given it a 6 if it wasn't for these things. If you look past them (quite literally) you'll find an OK show which can be funny.